Douglas Wildes "Doug" Fister (born February 4, 1984) is an American professional baseball pitcher for the Washington Nationals of Major League Baseball. Fister bats left-handed, and throws right-handed. He was born in Merced, California and attended Golden Valley High School. He then attended Merced College, and later Fresno State University. Fister spent four seasons (2006–2009) in the Seattle Mariners minor league organization before being promoted to the Major League roster in 2009.